:root {
  --navy-950: #06182d;
  --navy-900: #071f3b;
  --navy-800: #0b2e52;
  --blue-700: #145d94;
  --blue-500: #2784bd;
  --orange-500: #f28c28;
  --orange-400: #f6a74f;
  --ink: #172536;
  --muted: #607083;
  --line: #dce3ea;
  --line-dark: rgba(255, 255, 255, .16);
  --surface: #ffffff;
  --surface-soft: #f4f7fa;
  --surface-steel: #e8eef3;
  --success: #187b52;
  --shadow-sm: 0 5px 16px rgba(8, 31, 55, .08), 0 1px 3px rgba(8, 31, 55, .1);
  --shadow-md: 0 18px 50px rgba(5, 27, 49, .14), 0 4px 12px rgba(5, 27, 49, .09);
  --container: 1220px;
  --section-space: 112px;
  --radius: 6px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 112px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; letter-spacing: 0; }
button { color: inherit; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--navy-900); line-height: 1.12; letter-spacing: 0; }
h1 { font-size: 60px; font-weight: 760; }
h2 { margin-bottom: 24px; font-size: 44px; font-weight: 730; }
h3 { margin-bottom: 12px; font-size: 22px; font-weight: 700; }
p { margin-bottom: 18px; }
svg { fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: var(--section-space) 0; }
.section-index { margin-bottom: 16px; color: var(--orange-500); font-size: 13px; font-weight: 760; text-transform: uppercase; }
.section-heading { max-width: 780px; margin-bottom: 54px; }
.section-heading > p:last-child { margin-bottom: 0; color: var(--muted); font-size: 18px; }
.split-heading { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); gap: 72px; align-items: end; max-width: none; }
.split-heading h2 { margin-bottom: 0; }
.split-heading > p { margin-bottom: 4px; }

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 24px;
  border: 1px solid var(--orange-500);
  border-radius: 4px;
  background: var(--orange-500);
  color: var(--navy-950);
  font-size: 15px;
  font-weight: 740;
  line-height: 1.2;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.button svg, .text-link svg { width: 18px; height: 18px; }
.button:hover, .button:focus-visible { background: var(--orange-400); border-color: var(--orange-400); box-shadow: 0 9px 24px rgba(242, 140, 40, .28); transform: translateY(-1px); }
.button-small { min-height: 42px; padding-inline: 18px; font-size: 14px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--navy-900); font-size: 15px; font-weight: 720; }
.text-link svg { transition: transform .2s ease; }
.text-link:hover svg { transform: translateX(4px); }

.site-header { position: fixed; z-index: 1000; top: 0; right: 0; left: 0; color: white; }
.utility-bar { height: 32px; border-bottom: 1px solid rgba(255, 255, 255, .12); background: rgba(4, 20, 38, .62); transition: background .25s ease; }
.utility-inner { display: flex; height: 100%; align-items: center; justify-content: space-between; font-size: 12px; }
.utility-links { display: flex; gap: 24px; }
.utility-links a { display: inline-flex; align-items: center; gap: 7px; }
.utility-links svg { width: 14px; height: 14px; }
.nav-shell { border-bottom: 1px solid rgba(255, 255, 255, .14); transition: background .25s ease, box-shadow .25s ease, border-color .25s ease; }
.nav-inner { display: grid; min-height: 76px; grid-template-columns: 196px 1fr auto; gap: 28px; align-items: center; }
.brand { display: inline-flex; width: 172px; align-items: center; }
.brand img { width: 172px; height: auto; object-fit: contain; }
.logo-dark { display: none; }
.desktop-nav { display: flex; align-items: center; justify-content: flex-end; gap: 28px; }
.desktop-nav a { position: relative; padding: 28px 0 25px; color: rgba(255, 255, 255, .86); font-size: 14px; font-weight: 620; }
.desktop-nav a::after { position: absolute; right: 0; bottom: 18px; left: 0; height: 2px; background: var(--orange-500); content: ""; transform: scaleX(0); transform-origin: right; transition: transform .2s ease; }
.desktop-nav a:hover, .desktop-nav a.active { color: white; }
.desktop-nav a:hover::after, .desktop-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { min-width: 158px; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 2px; margin: 5px auto; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.mobile-menu { display: none; }
.site-header.scrolled .utility-bar { background: var(--navy-950); }
.site-header.scrolled .nav-shell { border-color: var(--line); background: rgba(255, 255, 255, .97); box-shadow: var(--shadow-sm); color: var(--navy-900); backdrop-filter: blur(12px); }
.site-header.scrolled .logo-light { display: none; }
.site-header.scrolled .logo-dark { display: block; }
.site-header.scrolled .desktop-nav a { color: #425469; }
.site-header.scrolled .desktop-nav a:hover, .site-header.scrolled .desktop-nav a.active { color: var(--navy-900); }

.hero {
  position: relative;
  min-height: min(820px, 90svh);
  overflow: hidden;
  background: linear-gradient(118deg, var(--navy-950) 0%, var(--navy-900) 48%, #0c3e67 100%);
  color: white;
}
.hero::after { position: absolute; inset: auto 0 0; height: 1px; background: rgba(255,255,255,.15); content: ""; }
.hero-lines { position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to right, black, transparent 72%); }
.hero-grid { position: relative; z-index: 1; display: grid; min-height: min(820px, 90svh); grid-template-columns: minmax(0, 1fr) minmax(440px, .96fr); gap: 40px; align-items: center; padding-top: 92px; }
.hero-copy { max-width: 670px; padding: 48px 0 36px; }
.hero h1 { margin-bottom: 24px; color: white; font-size: 64px; }
.hero-copy > p { max-width: 620px; margin-bottom: 34px; color: #c8d8e7; font-size: 19px; line-height: 1.65; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; }
.hero .text-link { color: white; }
.hero-proof { display: grid; margin: 48px 0 0; padding: 30px 0 0; border-top: 1px solid var(--line-dark); grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; }
.hero-proof li { padding-right: 20px; }
.hero-proof strong, .hero-proof span { display: block; }
.hero-proof strong { margin-bottom: 4px; color: white; font-size: 21px; }
.hero-proof span { color: #9fb2c5; font-size: 13px; line-height: 1.4; }
.hero-visual { position: relative; display: flex; min-height: 560px; align-items: center; justify-content: center; }
.hero-visual > img { position: relative; z-index: 2; width: min(620px, 108%); filter: drop-shadow(0 30px 30px rgba(0,0,0,.38)); }
.hero-product-ring { position: absolute; width: 500px; height: 500px; border: 1px solid rgba(255,255,255,.14); border-radius: 50%; }
.hero-product-ring::before, .hero-product-ring::after { position: absolute; border: 1px solid rgba(255,255,255,.09); border-radius: 50%; content: ""; }
.hero-product-ring::before { inset: 48px; }
.hero-product-ring::after { inset: 105px; }
.machine-note { position: absolute; z-index: 3; right: 0; bottom: 54px; min-width: 250px; padding: 15px 18px; border-left: 3px solid var(--orange-500); background: rgba(6, 24, 45, .88); box-shadow: var(--shadow-md); backdrop-filter: blur(10px); }
.machine-note span, .machine-note strong { display: block; }
.machine-note span { color: var(--orange-400); font-size: 11px; font-weight: 720; text-transform: uppercase; }
.machine-note strong { margin-top: 3px; color: white; font-size: 14px; }

.trust-strip { background: white; box-shadow: var(--shadow-md); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid > div { display: flex; min-height: 108px; padding: 22px 30px; border-right: 1px solid var(--line); flex-direction: column; justify-content: center; }
.trust-grid > div:last-child { border-right: 0; }
.trust-grid strong { color: var(--navy-900); font-size: 27px; line-height: 1.1; }
.trust-grid span { margin-top: 8px; color: var(--muted); font-size: 13px; }

.about { background: white; }
.about-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(340px, .85fr); gap: 64px; align-items: start; }
.about-main { margin: 0; }
.about-main img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-md); }
figcaption { margin-top: 12px; color: var(--muted); font-size: 13px; }
.about-story > p { color: #4f6072; font-size: 17px; }
.credential-list { margin-top: 34px; border-top: 1px solid var(--line); }
.credential-list > div { display: grid; padding: 19px 0; border-bottom: 1px solid var(--line); grid-template-columns: 44px 1fr; gap: 10px; }
.credential-list > div > span { color: var(--orange-500); font-size: 13px; font-weight: 750; }
.credential-list p { margin: 0; color: var(--muted); font-size: 14px; }
.credential-list strong { display: block; margin-bottom: 3px; color: var(--navy-900); font-size: 16px; }
.factory-rail { display: grid; margin-top: 64px; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.factory-rail figure { margin: 0; }
.factory-rail img, .factory-rail video { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius); background: var(--navy-950); box-shadow: var(--shadow-sm); }

.product-types { background: var(--surface-soft); }
.type-list { border-top: 1px solid #cbd5df; }
.type-row { display: grid; padding: 34px 0; border-bottom: 1px solid #cbd5df; grid-template-columns: 70px minmax(0, 1fr) 220px; gap: 28px; align-items: center; }
.type-number { color: var(--orange-500); font-size: 14px; font-weight: 760; }
.type-row h3 { margin-bottom: 8px; font-size: 25px; }
.type-row p { max-width: 710px; margin: 0; color: var(--muted); }
.type-use { padding-left: 24px; border-left: 2px solid var(--orange-500); color: var(--navy-800); font-size: 13px; font-weight: 700; }

.principle { overflow: hidden; background: var(--navy-950); color: white; }
.principle-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr); gap: 82px; align-items: center; }
.principle-media { position: relative; }
.principle-media::before { position: absolute; z-index: 0; top: -30px; right: 30px; bottom: 30px; left: -10vw; border: 1px solid rgba(255,255,255,.12); content: ""; }
.principle-media img { position: relative; z-index: 1; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); box-shadow: 0 28px 60px rgba(0,0,0,.34); }
.media-caption { position: relative; z-index: 2; display: flex; margin: -34px 22px 0; padding: 18px 20px; align-items: center; justify-content: space-between; background: white; box-shadow: var(--shadow-md); }
.media-caption strong { color: var(--navy-900); font-size: 15px; }
.media-caption span { color: var(--orange-500); font-size: 12px; font-weight: 700; }
.principle h2 { color: white; }
.principle .lead { color: #b7c7d7; font-size: 17px; }
.process-steps { margin: 34px 0 0; padding: 0; list-style: none; }
.process-steps li { display: grid; padding: 19px 0; border-top: 1px solid var(--line-dark); grid-template-columns: 42px 1fr; gap: 12px; }
.process-steps li > span { display: grid; width: 30px; height: 30px; border: 1px solid rgba(255,255,255,.28); border-radius: 50%; place-items: center; color: var(--orange-400); font-size: 12px; font-weight: 750; }
.process-steps strong { color: white; font-size: 17px; }
.process-steps p { margin: 4px 0 0; color: #9fb2c5; font-size: 14px; }

.advantages { background: white; }
.advantage-grid { display: grid; border-top: 1px solid var(--line); border-left: 1px solid var(--line); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.advantage-item { min-height: 260px; padding: 30px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.advantage-item > span { color: var(--orange-500); font-size: 12px; font-weight: 760; }
.advantage-item h3 { margin-top: 38px; font-size: 20px; }
.advantage-item p { margin: 0; color: var(--muted); font-size: 14px; }
.advantage-item:hover { background: var(--surface-soft); }

.applications { background: var(--surface-steel); }
.application-gallery { display: grid; grid-template-columns: 1.45fr 1fr 1fr; grid-template-rows: repeat(2, 260px); gap: 18px; }
.application-gallery figure { position: relative; margin: 0; overflow: hidden; border-radius: var(--radius); background: var(--navy-950); box-shadow: var(--shadow-sm); }
.application-gallery figure:first-child { grid-row: 1 / 3; }
.application-gallery figure:last-child { grid-column: 2 / 4; }
.application-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease; }
.application-gallery figure:hover img { transform: scale(1.035); }
.application-gallery figcaption { position: absolute; right: 0; bottom: 0; left: 0; margin: 0; padding: 38px 20px 18px; background: linear-gradient(to top, rgba(3,18,34,.9), transparent); color: white; }
.application-gallery figcaption strong, .application-gallery figcaption span { display: block; }
.application-gallery figcaption strong { font-size: 18px; }
.application-gallery figcaption span { margin-top: 3px; color: #d0dbe5; font-size: 12px; }
.industry-band { display: flex; margin-top: 34px; padding: 18px 0; border-top: 1px solid #bdc9d3; border-bottom: 1px solid #bdc9d3; justify-content: space-between; gap: 20px; color: var(--navy-800); font-size: 11px; font-weight: 760; }

.cases { background: white; }
.case-feature { display: grid; margin-bottom: 26px; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); background: var(--navy-950); box-shadow: var(--shadow-md); }
.case-video-wrap { min-height: 430px; background: #020a12; }
.case-video-wrap video { width: 100%; height: 100%; object-fit: cover; }
.case-copy { padding: 54px 44px; color: #b8c7d5; }
.case-label { display: inline-block; margin-bottom: 22px; color: var(--orange-400); font-size: 12px; font-weight: 760; text-transform: uppercase; }
.case-copy h3 { color: white; font-size: 30px; }
.case-copy dl { margin: 34px 0 0; }
.case-copy dl > div { display: flex; padding: 12px 0; border-top: 1px solid var(--line-dark); justify-content: space-between; gap: 20px; }
.case-copy dt { color: #8298ab; font-size: 12px; }
.case-copy dd { margin: 0; color: white; font-size: 13px; font-weight: 650; text-align: right; }
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.case-grid article { border-bottom: 3px solid var(--navy-900); background: var(--surface-soft); box-shadow: var(--shadow-sm); }
.case-grid img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.case-grid article > div { padding: 22px; }
.case-grid span { color: var(--orange-500); font-size: 11px; font-weight: 760; text-transform: uppercase; }
.case-grid h3 { margin: 8px 0; font-size: 20px; }
.case-grid p { margin: 0; color: var(--muted); font-size: 14px; }

.specifications { background: var(--surface-soft); }
.table-wrap { overflow-x: auto; border-top: 4px solid var(--orange-500); background: white; box-shadow: var(--shadow-sm); }
table { width: 100%; min-width: 860px; border-collapse: collapse; }
th, td { padding: 17px 18px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { background: var(--navy-900); color: white; font-size: 12px; font-weight: 720; text-transform: uppercase; }
td { color: #405165; font-size: 14px; }
tbody tr:hover { background: #f6f9fb; }
tbody td:first-child { color: var(--navy-900); font-weight: 760; }
.spec-notes { display: grid; margin-top: 30px; grid-template-columns: 250px 1fr; gap: 30px; align-items: start; }
.spec-notes > p { color: var(--navy-900); font-size: 16px; }
.spec-notes ul { display: flex; margin: 0; padding: 0; flex-wrap: wrap; gap: 9px 0; list-style: none; }
.spec-notes li { position: relative; width: 25%; padding-left: 22px; color: var(--muted); font-size: 13px; }
.spec-notes li::before { position: absolute; top: 8px; left: 3px; width: 7px; height: 7px; border-radius: 50%; background: var(--orange-500); content: ""; }

.faq { background: white; }
.faq-layout { display: grid; grid-template-columns: minmax(280px, .7fr) minmax(0, 1.3fr); gap: 96px; align-items: start; }
.faq-intro { position: sticky; top: 142px; }
.faq-intro h2 { font-size: 40px; }
.faq-intro > p:not(.section-index) { color: var(--muted); font-size: 17px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item h3 { margin: 0; }
.faq-item button { display: flex; width: 100%; padding: 23px 0; border: 0; align-items: center; justify-content: space-between; gap: 20px; background: transparent; color: var(--navy-900); font-size: 17px; font-weight: 680; text-align: left; cursor: pointer; }
.faq-item button svg { width: 20px; height: 20px; flex: 0 0 auto; transition: transform .2s ease; }
.faq-item button[aria-expanded="true"] svg { transform: rotate(180deg); }
.faq-answer { padding: 0 48px 22px 0; }
.faq-answer p { margin: 0; color: var(--muted); font-size: 15px; }

.contact { padding: 104px 0; background: linear-gradient(120deg, var(--navy-950), var(--navy-800)); color: white; }
.contact-grid { display: grid; grid-template-columns: minmax(320px, .82fr) minmax(0, 1.18fr); gap: 88px; align-items: start; }
.contact h2 { color: white; font-size: 46px; }
.contact-copy > p:not(.section-index) { color: #bdccda; font-size: 17px; }
.contact-details { margin-top: 42px; border-top: 1px solid var(--line-dark); }
.contact-details > a, .contact-details > div { display: grid; padding: 18px 0; border-bottom: 1px solid var(--line-dark); grid-template-columns: 32px 1fr; gap: 12px; align-items: start; }
.contact-details svg { width: 21px; height: 21px; margin-top: 4px; color: var(--orange-400); }
.contact-details small { display: block; margin-bottom: 2px; color: #8298ab; font-size: 11px; text-transform: uppercase; }
.contact-details span { color: white; font-size: 14px; }
.inquiry-form { padding: 38px; border-radius: var(--radius); background: white; box-shadow: 0 26px 70px rgba(0,0,0,.24); color: var(--ink); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.form-grid label { display: block; }
.form-grid label > span { display: block; margin-bottom: 7px; color: #405165; font-size: 12px; font-weight: 690; }
.form-grid .full { grid-column: 1 / -1; }
input, textarea { width: 100%; border: 1px solid #cbd5df; border-radius: 3px; outline: none; background: white; color: var(--ink); transition: border-color .2s ease, box-shadow .2s ease; }
input { height: 48px; padding: 0 13px; }
textarea { min-height: 120px; padding: 12px 13px; resize: vertical; }
input:focus, textarea:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(39,132,189,.14); }
input.invalid, textarea.invalid { border-color: #c93b3b; }
.consent { display: flex; margin: 20px 0; gap: 10px; align-items: flex-start; color: var(--muted); font-size: 12px; }
.consent input { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--orange-500); }
.form-status { min-height: 24px; margin: 14px 0 0; color: var(--success); font-size: 13px; }

.site-footer { padding: 68px 0 0; background: #030e1a; color: #95a8ba; }
.footer-grid { display: grid; padding-bottom: 54px; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 64px; }
.footer-brand img { width: 180px; }
.footer-brand p { max-width: 320px; margin-top: 24px; font-size: 14px; }
.footer-grid h2 { margin-bottom: 18px; color: white; font-size: 15px; }
.footer-grid > div:not(.footer-brand) a { display: block; margin: 10px 0; font-size: 13px; transition: color .2s ease; }
.footer-grid a:hover { color: var(--orange-400); }
.footer-bottom { display: flex; min-height: 68px; border-top: 1px solid rgba(255,255,255,.1); align-items: center; justify-content: space-between; gap: 24px; font-size: 12px; }
.footer-bottom p { margin: 0; }

.whatsapp-float { position: fixed; z-index: 900; right: 22px; bottom: 22px; display: flex; min-height: 52px; padding: 0 17px; border-radius: 4px; align-items: center; gap: 9px; background: #20a867; color: white; box-shadow: 0 12px 32px rgba(3, 32, 19, .3); font-size: 13px; font-weight: 730; transition: transform .2s ease, background .2s ease; }
.whatsapp-float svg { width: 23px; height: 23px; }
.whatsapp-float:hover { background: #168b53; transform: translateY(-2px); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1120px) {
  :root { --section-space: 92px; }
  h1 { font-size: 52px; }
  h2 { font-size: 39px; }
  .desktop-nav { gap: 18px; }
  .desktop-nav a { font-size: 13px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(380px, .9fr); }
  .hero h1 { font-size: 54px; }
  .hero-visual > img { width: 112%; }
  .about-layout, .principle-grid { gap: 48px; }
  .advantage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-feature { grid-template-columns: 1.1fr .9fr; }
  .case-video-wrap { min-height: 390px; }
  .contact-grid { gap: 54px; }
  .footer-grid { gap: 36px; }
}

@media (max-width: 940px) {
  .container { width: min(calc(100% - 36px), var(--container)); }
  .nav-inner { min-height: 70px; grid-template-columns: 1fr auto auto; }
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .nav-cta { display: none; }
  .mobile-menu { position: fixed; top: 102px; right: 0; bottom: 0; left: 0; z-index: 999; display: flex; padding: 34px 28px; flex-direction: column; gap: 0; background: white; color: var(--navy-900); transform: translateX(100%); transition: transform .25s ease; }
  .mobile-menu.open { transform: none; box-shadow: var(--shadow-md); }
  .mobile-menu > a:not(.button) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; font-weight: 650; }
  .mobile-menu .button { margin-top: 26px; align-self: flex-start; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-header:not(.scrolled) .mobile-menu + * { color: white; }
  .hero, .hero-grid { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 0; padding-top: 116px; padding-bottom: 24px; }
  .hero-copy { max-width: 720px; padding: 18px 0 0; }
  .hero-visual { min-height: 305px; }
  .hero-visual > img { width: min(460px, 74%); }
  .machine-note { right: 8%; bottom: 0; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid > div:nth-child(2) { border-right: 0; }
  .trust-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .split-heading { grid-template-columns: 1fr; gap: 20px; }
  .about-layout, .principle-grid, .faq-layout, .contact-grid { grid-template-columns: 1fr; }
  .about-story { max-width: 720px; }
  .principle-grid { gap: 70px; }
  .faq-layout { gap: 48px; }
  .faq-intro { position: static; max-width: 680px; }
  .application-gallery { grid-template-columns: repeat(2, 1fr); grid-template-rows: 360px 240px 260px; }
  .application-gallery figure:first-child { grid-row: 1; }
  .application-gallery figure:first-child, .application-gallery figure:last-child { grid-column: 1 / 3; }
  .case-feature { grid-template-columns: 1fr; }
  .case-video-wrap { min-height: 0; aspect-ratio: 16 / 9; }
  .case-grid { grid-template-columns: 1fr 1fr; }
  .case-grid article:last-child { grid-column: 1 / 3; }
  .spec-notes { grid-template-columns: 1fr; }
  .spec-notes li { width: 33.333%; }
  .contact-grid { gap: 48px; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  :root { --section-space: 72px; }
  html { scroll-padding-top: 82px; }
  body { font-size: 15px; }
  .container { width: min(calc(100% - 28px), var(--container)); }
  h1, .hero h1 { font-size: 39px; }
  h2 { font-size: 32px; }
  .section-heading { margin-bottom: 38px; }
  .utility-bar { display: none; }
  .nav-shell { background: rgba(6,24,45,.72); backdrop-filter: blur(8px); }
  .nav-inner { min-height: 70px; }
  .brand, .brand img { width: 150px; }
  .mobile-menu { top: 70px; }
  .hero-grid { min-height: auto; padding-top: 94px; padding-bottom: 16px; align-content: center; }
  .hero-copy { padding: 0; }
  .hero h1 { margin-bottom: 16px; }
  .hero-copy > p { margin-bottom: 18px; font-size: 15px; }
  .hero-actions { gap: 12px; }
  .hero-actions .button { width: 100%; }
  .hero-actions .text-link { margin-left: 2px; }
  .hero-proof { margin-top: 20px; padding-top: 18px; }
  .hero-proof li { padding-right: 8px; }
  .hero-proof strong { font-size: 16px; }
  .hero-proof span { font-size: 10px; }
  .hero-visual { min-height: 220px; }
  .hero-visual > img { width: min(300px, 82%); }
  .hero-product-ring { width: 230px; height: 230px; }
  .machine-note { display: none; }
  .trust-grid > div { min-height: 92px; padding: 18px 16px; }
  .trust-grid strong { font-size: 21px; }
  .about-layout { gap: 38px; }
  .factory-rail { grid-template-columns: 1fr; margin-top: 44px; }
  .type-row { grid-template-columns: 42px 1fr; padding: 27px 0; gap: 16px; }
  .type-use { grid-column: 2; padding: 0; border: 0; }
  .type-row h3 { font-size: 21px; }
  .principle-grid { gap: 54px; }
  .principle-media::before { right: 14px; bottom: 18px; left: -6vw; }
  .media-caption { margin-right: 10px; margin-left: 10px; padding: 14px; flex-direction: column; align-items: flex-start; gap: 3px; }
  .advantage-grid { grid-template-columns: 1fr; }
  .advantage-item { min-height: auto; padding: 24px 22px; }
  .advantage-item h3 { margin-top: 24px; }
  .application-gallery { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(4, 300px); }
  .application-gallery figure:first-child, .application-gallery figure:last-child { grid-column: auto; }
  .industry-band { overflow: hidden; flex-wrap: wrap; justify-content: flex-start; }
  .case-copy { padding: 34px 24px; }
  .case-copy h3 { font-size: 25px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-grid article:last-child { grid-column: auto; }
  .spec-notes li { width: 50%; }
  .faq-intro h2 { font-size: 32px; }
  .faq-item button { font-size: 15px; }
  .contact { padding: 74px 0; }
  .contact h2 { font-size: 34px; }
  .inquiry-form { padding: 25px 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { padding: 18px 0; flex-direction: column; align-items: flex-start; justify-content: center; }
  .whatsapp-float { right: 14px; bottom: 14px; width: 50px; min-height: 50px; padding: 0; border-radius: 50%; justify-content: center; }
  .whatsapp-float span { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}